JJ vs 64s: Odds & Interactive Calculator
| Hand | Win | Tie | Equity |
|---|---|---|---|
| JJ (Pocket Jacks) | 79.3% | 0.4% | 79.6% |
| 64s (Six-Four Suited) | 20.2% | 0.4% | 20.4% |
How JJ vs 64s unfolds by street
Pocket Jacks (JJ) is still ahead on 94% of flops against 64s, and the lead survives to the turn on 88%. 64s takes the lead on the other 6% of flops. These figures come from full board enumeration, not a simulation.
| Street | JJ still ahead | 64s flipped the lead |
|---|---|---|
| Flop | 94% | 6% |
| Turn | 88% | 12% |
JJ vs 64s is the "big pair against live cards" spot: JJ wins 79.3%, 64s wins 20.2%, and 0.4% of boards chop. Even at a 3.9-to-1 deficit, 64s keeps about 20.2% because suited connectors attack three ways at once — pairing either card, completing a straight, or filling the flush.
Here's the intuition behind 79.6% to 20.4%: JJ wins roughly 4 of every 5 times the chips go in, but the underdog cashing 20.4% of the time is exactly why you can't slow-play and let it draw for free.
JJ should play this fast and deny equity: every free card helps 64s more than it helps you. If you're the one with the suited connectors, lean on implied odds and fold equity rather than the raw 20.2% — the hand's value is in the pots you take away postflop, not in flipping all-in preflop.
Where to take JJ vs 64s next
Getting it in near the money bubble or at a final table? Chip equity isn't prize equity — check the spot in the ICM calculator before you call off your stack.
Played a hand like this yourself? Import it into the poker hand analyzer for a street-by-street review of every decision, not just the all-in.
For the bigger picture, the poker tournament strategy guide covers when to shove and when to fold as stacks shrink, and what GTO poker is explains why strong players think in ranges rather than single hands.
New to the game? The poker hand rankings chart shows which hand wins at showdown, how to play poker: a beginner's guide walks through the rules and betting rounds, and the poker strategy guide shows where preflop equity fits into a winning game plan.
JJ vs 64s FAQ
Who wins JJ vs 64s preflop?
JJ (Pocket Jacks) is the favorite, winning 79.3% of all runouts, while 64s (Six-Four Suited) wins 20.2%. The remaining 0.4% are split pots. Counting splits as half, JJ's preflop equity is 79.6%.
Does the JJ vs 64s probability change all-in preflop?
No. Once both hands are all-in preflop the odds are set by the cards alone — position, stack size and who bet first change nothing. The only thing that moves the number is suits: JJ's equity runs from 79.0% to 80.1% depending on how many suits the two hands share, which is why different sites quote slightly different figures. It does change once board cards are dealt (JJ leads on 94% of flops) and in multiway pots, where every extra caller takes equity from both hands.
Are suited connectors good against JJ?
Better than almost any other underdog: 64s holds 20.4% equity against JJ thanks to its straight and flush potential — roughly 1 win in 5. That equity is realized best with position and fold equity postflop, not by jamming all-in preflop where the overpair is a 3.9-to-1 favorite.
Does JJ hold up against 64s after the flop?
JJ is still ahead on 94% of flops and stays ahead through the turn on 88% of boards; 64s takes the lead on the other 6% of flops. These are exact figures from full board enumeration.
Run any matchup in the free equity calculator · AA VS 54S · AA VS 87S · AA VS 98S · AA VS T9S · AA VS JTS · AA VS 75S
JJ against a range
All-in against one known hand is the textbook case; at the table JJ is usually up against a range. Exact equities, computed over every combo with card removal applied:
- JJ vs calling station — 71.9% against 670 combos (50.5% of hands)
- JJ vs BTN open — 70.9% against 586 combos (44.2% of hands)
- JJ vs SB open — 70.0% against 534 combos (40.3% of hands)
- JJ vs CO open — 68.5% against 366 combos (27.6% of hands)